.mask {
    top: 0px;
    filter: alpha(opacity=60);
    background-color: #777;
    z-index: 1002; left: 0px;
    opacity:0.5; -moz-opacity:0.5;

    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.5);
    display: none; 
    position: absolute;
}
.maskLoading {
    height: 128px;
    width: 128px;
    background-image: url("../../images/wait.gif"); 
    position: absolute;
    top: 50%;
    left: 50%;
   /*  margin-top: -64px;
    margin-left: -64px;
    background-size: 50%; */
    margin-top: -46px;
    margin-left: -46px;
    background-size: 45%;
    background-repeat: no-repeat;
}
#bottom_table .maskLoading {
	height: 60px;
	margin-top: -46px;
    background-size: 40%;
}